BangleApps/apps/batchart/widget.js

(() => {
  var switchableConsumers = {
    none: 0,
    lcd: 1,
    compass: 2,
    bluetooth: 4,
    gps: 8,
    hrm: 16
  }
  var settings = {};
  var batChartFile; // file for battery percentage recording
  const recordingInterval10Min = 60 * 10 * 1000;
  const recordingInterval1Min = 60*1000; //For testing 
  const recordingInterval10S = 10*1000; //For testing 
  var recordingInterval = null;

  // draw your widget
  function draw() {
    g.reset();
    g.drawString("BC", this.x, this.y);
  }

  // Called by the heart app to reload settings and decide what's
  function reload() {
    WIDGETS["batchart"].width = 24;

    // Check if the data file exists, if not try to create it.
    var batChartFileCheck = require("Storage").open("batchart.dat", "r");
    if (!batChartFileCheck)
      if (!require("Storage").write("batchart.dat", ""))
        //Only continue if the file was created
        return;
    
    recordingInterval = setInterval(() => {
      var batChartFileAppend = require("Storage").open("batchart.dat", "a");
      if (batChartFileAppend) {    
        console.log([getTime().toFixed(0), E.getBattery(), E.getTemperature(), getEnabledConsumersValue()].join(","));
        batChartFileAppend.write([getTime().toFixed(0),E.getBattery].join(",")+"\n");
      }
    }, recordingInterval1Min)
  }

  function getEnabledConsumersValue() {
    var enabledConsumers = switchableConsumers.none;

    if (Bangle.isLCDOn())
      enabledConsumers = enabledConsumers | switchableConsumers.lcd;
    // Already added in the hope they will be available soon to get more details
    // if (Bangle.isCompassOn())
    //   enabledConsumers = enabledConsumers | switchableConsumers.compass;
    // if (Bangle.isBluetoothOn())
    //   enabledConsumers = enabledConsumers | switchableConsumers.bluetooth;
    // if (Bangle.isGpsOn())
    //   enabledConsumers = enabledConsumers | switchableConsumers.gps;
    // if (Bangle.isHrmOn())
    //   enabledConsumers = enabledConsumers | switchableConsumers.hrm;
    
    return enabledConsumers;
  }

  // add the widget
  WIDGETS["batchart"]={area:"tl",width:24,draw:draw,reload:function() {
    reload();
    Bangle.drawWidgets(); // relayout all widgets
  }};
  // load settings, set correct widget width
  reload();
})()